1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS EN ISO 1833-20:2010Textiles Quantitativechemical analysisPart 20: Mixtures of elastane andcertain other fibres (method usingdimethylacetamide) (ISO 1833-20:2009)BS EN ISO 1833
2、-20:2010 BRITISH STANDARDNational forewordThis British Standard is the UK implementation of EN ISO1833-20:2010. It is identical to ISO 1833-20:2009. It supersedes BS4407:1988 which will be withdrawn on publication of the otherparts of the BS EN ISO 1833 series.The UK participation in its preparation
3、 was entrusted to TechnicalCommittee TCI/80, Chemical testing of textiles.A list of organizations represented on this committee can beobtained on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctappl
4、ication. BSI 2011ISBN 978 0 580 72141 0ICS 59.060.01; 59.060.20Compliance with a British Standard cannot confer immunity fromlegal obligations.This British Standard was published under the authority of theStandards Policy and Strategy Committee on 28 February 2011.Amendments issued since publication
5、Date Text affectedEUROPEAN STANDARD NORME EUROPENNE EUROPISCHE NORM EN ISO 1833-20 October 2010 ICS 59.060.01 English Version Textiles - Quantitative chemical analysis - Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide) (ISO 1833-20:2009) Textiles - Analyse chim
6、ique quantitative - Partie 20: Mlanges dlasthanne et de certaines autres fibres (mthode la dimthylactamide) (ISO 1833-20:2009) Textilien - Quantitative chemische Analysen - Teil 20: Mischungen aus Elasthanfasern und bestimmten anderen Fasern (Dimethylacetamid-Verfahren) (ISO 1833-20:2009)This Europe
7、an Standard was approved by CEN on 12 September 2010. CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references c
8、oncerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into it
9、s own language and notified to the CEN Management Centre has the same status as the official versions. CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, L
10、atvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom. EUROPEAN COMMITTEE FOR STANDARDIZATION COMIT EUROPEN DE NORMALISATION EUROPISCHES KOMITEE FR NORMUNG Management Centre: Avenue Marnix 17, B-1000 Bru
11、ssels 2010 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN ISO 1833-20:2010: EBS EN ISO 1833-20:2010EN ISO 1833-20:2010 (E) 3 Foreword The text of ISO 1833-20:2009 has been prepared by Technical Committee ISO/TC 38 “Textiles” of th
12、e International Organization for Standardization (ISO) and has been taken over as EN ISO 1833-20:2010 by Technical Committee CEN/TC 248 “Textiles and textile products” the secretariat of which is held by BSI. This European Standard shall be given the status of a national standard, either by publicat
13、ion of an identical text or by endorsement, at the latest by April 2011, and conflicting national standards shall be withdrawn at the latest by April 2011. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN and/or CENELEC shall n
14、ot be held responsible for identifying any or all such patent rights. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark
15、, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and the United Kingdom. Endorsement notice The text of ISO 1833-20:2009 has been approve
16、d by CEN as a EN ISO 1833-20:2010 without any modification. BS EN ISO 1833-20:2010ISO 1833-20:2009(E) ISO 2009 All rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing In
17、ternational Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison
18、with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of techn
19、ical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn
20、 to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 1833-20 was prepared by Technical Committee ISO/TC 38, Textiles. This first edition, together with ISO 1833-1 to IS
21、O 1833-19 and ISO 1833-21 to ISO 1833-24, cancels and replaces ISO 1833:1977, which has been technically revised. ISO 1833 consists of the following parts, under the general title Textiles Quantitative chemical analysis: Part 1: General principles of testing Part 2: Ternary fibre mixtures Part 3: Mi
22、xtures of acetate and certain other fibres (method using acetone) Part 4: Mixtures of certain protein and certain other fibres (method using hypochlorite) Part 5: Mixtures of viscose, cupro or modal and cotton fibres (method using sodium zincate) Part 6: Mixtures of viscose or certain types of cupro
23、 or modal or lyocell and cotton fibres (method using formic acid and zinc chloride) Part 7: Mixtures of polyamide and certain other fibres (method using formic acid) Part 8: Mixtures of acetate and triacetate fibres (method using acetone) Part 9: Mixtures of acetate and triacetate fibres (method usi
24、ng benzyl alcohol) Part 10: Mixtures of triacetate or polylactide and certain other fibres (method using dichloromethane) Part 11: Mixtures of cellulose and polyester fibres (method using sulfuric acid) Part 12: Mixtures of acrylic, certain modacrylics, certain chlorofibres, certain elastanes and ce
25、rtain other fibres (method using dimethylformamide) Part 13: Mixtures of certain chlorofibres and certain other fibres (method using carbon disulfide/acetone) BS EN ISO 1833-20:2010ISO 1833-20:2009(E) iv ISO 2009 All rights reserved Part 14: Mixtures of acetate and certain chlorofibres (method using
26、 acetic acid) Part 15: Mixtures of jute and certain animal fibres (method by determining nitrogen content) Part 16: Mixtures of polypropylene fibres and certain other fibres (method using xylene) Part 17: Mixtures of chlorofibres (homopolymers of vinyl chloride) and certain other fibres (method usin
27、g sulfuric acid) Part 18: Mixtures of silk and wool or hair (method using sulfuric acid) Part 19: Mixtures of cellulose fibres and asbestos (method by heating) Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide) Part 21: Mixtures of chlorofibres, certain modacryli
28、cs, certain elastanes, acetates, triacetates and certain other fibres (method using cyclohexanone) Part 24: Mixtures of polyester and certain other fibres (method using phenol and tetrachloroethane) The following parts are under preparation: Part 22: Mixtures of viscose or certain types of cupro or
29、modal or lyocell and flax fibres (method using formic acid and zinc chloride) Part 25: Mixtures of polyester and some other fibres (method using trichloracetic acid and chloroform) Part 23 of ISO 1833, Mixtures of polyethylene and polypropylene (method using cyclohexanone) was withdrawn by Technical
30、 Committee ISO/TC 38. BS EN ISO 1833-20:2010INTERNATIONAL STANDARD ISO 1833-20:2009(E) ISO 2009 All rights reserved 1Textiles Quantitative chemical analysis Part 20: Mixtures of elastane and certain other fibres (method using dimethylacetamide) WARNING This part of ISO 1833 calls for the use of subs
31、tances/procedures that may be injurious to the health/environment if appropriate conditions are not observed. It refers only to technical suitability and does not absolve the user from legal obligations relating to health and safety/environment at any stage. 1 Scope This part of ISO 1833 specifies a
32、 method using dimethylacetamide to determine the percentage of elastane, after removal of non-fibrous matter, in textiles made of binary mixtures of certain elastane fibres with cotton, viscose, cupro, modal, polyamide, polyester or wool fibres. This method is not applicable when acrylic fibres are
33、present. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 1833-1:2006,
34、Textiles Quantitative chemical analysis Part 1: General principles of testing 3 Principle The elastane fibre is dissolved out from a known dry mass of the mixture with dimethylacetamide (DMA). The residue is collected, washed, dried and weighed; its mass, corrected if necessary, is expressed as a pe
35、rcentage of the dry mass of the mixture. The percentage of elastane is found by difference. 4 Reagents Use the reagents described in ISO 1833-1, together with that specified in 4.1. 4.1 Dimethylacetamide (DMA) SAFETY PRECAUTIONS The harmful effects of this reagent shall be borne in mind, and full pr
36、ecautions shall be taken during use. BS EN ISO 1833-20:2010ISO 1833-20:2009(E) 2 ISO 2009 All rights reserved5 Apparatus Use the items of apparatus described in ISO 1833-1, together with those described in 5.1 and 5.2. 5.1 Conical flask, of minimum capacity 250 ml, glass stoppered. 5.2 Heating appar
37、atus, suitable for maintaining the temperature of the flask within the limits 60 C to 65 C. 6 Test procedure Follow the general procedure described in ISO 1833-1, and then proceed as follows. Place the specimen in the conical flask. Add 150 ml of DMA per gram of specimen. Shake to wet the specimen.
38、Leave it for at least for 30 min in the double boiler at 60 C, shaking at intervals. Filter the contents of the conical flask through the weighted filter crucible (6.1 in ISO 1833-1:2006) and transfer any residual fibres to the crucible by washing out the conical flask with DMA. Drain the crucible u
39、sing suction and wash with water. Do not apply suction until the washing liquor has drained under gravity. Finally, drain the crucible with suction, dry the crucible and residue, cool and weigh them. 7 Calculation and expression of results Calculate the results as described in the instructions in Cl
40、ause 10 of ISO 1833-1:2006. The value of d (correction factor of variation in mass of the insoluble component in the reagent) is 1,00, except for wool, for which d is 1,01; and for cotton, for which d is 1,02. 8 Precision On a homogeneous mixture of textile materials, the confidence limits of the re
41、sults obtained by this method are not greater than 1 % for a confidence level of 95 %. BS EN ISO 1833-20:2010ISO 1833-20:2009(E) ISO 2009 All rights reserved 3Bibliography 1 ISO 2076, Textiles Man-made fibres Generic names 2 ISO 6938, Textiles Natural fibres Generic names and definitions This page d
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